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Seat dimensions

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Can someone please tell me the distance between the front of the Roadster seat base and the centre of the side mounting lugs?

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That's 14 1/2" to front of bracket,  16 1/8" to rear of bracket & 15 5/15" to centre. Measured from seat nose.

That's on a 1972 Roadster.

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This has raised another problem. My 1971 Roadster came to me with an additional Interstate steel tank to replace the fibre glass Roadster tank which, along with a non Norton seat, is not in good condition. I have tried the Interstate tank for size and fits and looks well, however it so much longer than the original tank.  I was hoping that a standard Roadster seat would fit but alas no. As Geoff has pointed out the distance from the nose to the mounting brackets is some 15", but I need a mounting distance of only some 11". Would a standard Interstate seat fit?

 


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